package cn.tedu.boot21.controller;

import cn.tedu.boot21.entity.User;
import cn.tedu.boot21.utils.DBUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.PropertyPermission;
import java.util.Scanner;

@Controller
public class UserController {
    @RequestMapping("/reg")
    @ResponseBody
    public  String reg(User user){

        try (Connection  conn= DBUtils.getConn()){
            String sql = "select id from user where username=?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1,user.getUsername());
            ResultSet rs = ps.executeQuery();
            if (rs.next()){
               return "用户已存在!";

            }
            String inSql = "insert into user values(null,?,?,?)";
           PreparedStatement inPs = conn.prepareStatement(inSql);
           inPs.setString(1, user.getUsername());
            inPs.setString(2, user.getPassword());
            inPs.setString(3, user.getNick());
           inPs.executeUpdate();

        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }

        return "注册成功!";
    }
    @RequestMapping("/log")
    @ResponseBody
    public String log(User user){
        System.out.println("user = " + user);
        try( Connection conn = DBUtils.getConn()) {
            String sql = "select password from user where username=?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1, user.getUsername());
            ResultSet rs = ps.executeQuery( );
            if (rs.next()){

                if (rs.getString(1).equals(user.getPassword())){
                    return "登录成功!";
                }
                    return "密码错误!";
                }

        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return "用户名不存在!";
    }
}
